Laboratory tests help to accurately show the presence of parasites in the human body.Often, blood and stool samples are needed to test for worms.
Each modern method has both disadvantages and advantages.For this reason, doctors recommend conducting a thorough examination of the body to find out if a person has worms.
A stool test for parasites will show the presence of helminth larvae and eggs.However, test results do not always allow an accurate diagnosis to be made.
This fact is explained by the fact that worms have several specific development phases;they can live and parasitize in various parts of the digestive tract.To get the most accurate results, you need to donate feces at least 3 times a week.
If the study of blood samples is indicated, they will reveal antibodies that appear as a result of the human body's reaction to the toxins secreted by the worms.Since today there are about 150 species of parasites living in the human body, no research method can be 100% accurate.
Are there worms or not?
Everyone knows that the main indicators based on the presence of parasites are suspected:
- excessive thinning of a person against the background of increased appetite;
- stomach ache after eating;
- attack of morning sickness.
Such symptoms will allow you to only suspect that you have worms at home, but an accurate diagnosis can be made after undergoing body diagnostics and taking tests for parasites.These signs may indicate pathology of the digestive tract, metabolic disorders, and other diseases.
If you have worms, the symptoms are as follows: flatulence, periodic discomfort in the abdominal cavity, stool pain (diarrhea, constipation), after eating you may have a feeling of heaviness in the stomach, these may be worms in the stomach.
Many people, after discovering signs of parasitic infestation, immediately start taking all kinds of drugs and switch to a soft diet.In most cases, such measures will be futile, and sometimes even cause harm.Before starting treatment, you need to be tested for worms, especially if the following symptoms have occurred:
- discomfort near the anus;
- decreased immunity, frequent colds;
- rash on the skin (urticaria), inflammation (boils);
- persistent cough, it does not go away even after treatment.
Parasites can negatively affect the functioning of the central nervous system.This is evidenced by signs: excessive restlessness, irritability, fatigue.
When to donate blood
A blood test for the presence of worms is carried out if a person is bothered by headaches, skin problems, itching around the anus, insomnia, digestive disorders (diarrhea, mucus in the stool, constipation).With a parasite attack, the patient will notice excessive fragility of the nails and hair loss.
If children are sick, their symptoms may look different.In addition to these signs, there is strong salivation, increased appetite, and lack of concentration.
Therefore, a blood test for the presence of antigens to worms is an important diagnostic step that will detect parasites in the body and determine the disease as early as possible.There is an opinion that to make a diagnosis it is enough to prepare only a stool sample, but this is not so.Blood tests are rarely done because patients don't want to waste their time and money.
Not everyone knows that eggs in feces can only be detected if worms
- filling the intestines;
- is actively developing;
- breed.
A blood test for worms in adults will show an infestation in the early stages.To carry out such an analysis, you should take blood from the cubital vein, which will allow you to accurately and quickly determine the type of parasite and choose a way to get rid of it.
Blood sampling is also necessary if there is suspicion of infection with worms, when helminths are detected in domestic animals, to carry out epidemiological diagnostic measures in a certain region.It is necessary to check whether a person has worms if the level of blood leukocytes is increased, which does not indicate other pathological conditions.
Sometimes routine examinations are carried out for people whose professional activities are closely related to an increased risk of parasitic infection;As a rule, this group includes:
- meat processing factory workers;
- farmers;
- veterinarian.
Determining the presence of antibodies to parasites is necessary for fibroids, inflammatory processes in the adrenal glands, bladder, and kidneys in women.Men are advised to undergo a blood test for prostatitis, adenoma, and impotence.
A proven sign that worms may exist in the body is indigestion.In this case, blood tests are conducted for men and women.
Stool analysis
To get accurate results, the patient must follow clear rules.So, 1 week before the analysis, you need to stop taking antiparasitic, antidiarrheal and antibacterial drugs, castor and mineral oil.
When the colon examination is not scheduled (irrigoscopy procedure), blood donation is allowed no later than 2 weeks after the stool test.You should know that the container with the substance should not be stored at temperatures above zero.Optimally, it is 4-8 degrees for no more than 8 hours.
Stool tests for protozoan parasites are carried out as follows:
- take 2 teaspoons of feces;
- transfer to a clean, dry container;
- cover with a lid.
Ideally, you should take material from different parts of the stool.To get an accurate answer, feces are collected no later than half an hour after defecation, and the jar is immediately sent to the laboratory.
It is important to draw the patient's attention that a single test to identify worms in humans is not always sufficient, especially for the eggs of pinworms and roundworms.Accordingly, the analysis is repeated at least 3 times with a frequency of 1-2 days.
How to send scraping
Before checking the presence of worms using scraping, you need to familiarize yourself with the basic rules of the procedure.First of all, it is forbidden to wash the area around the anus, as this will destroy the traces of parasites.To get the most accurate results, it is equally important not to empty your bowels before taking the scraper.
Scrapings for worms are taken in a laboratory or clinic, but worms can also be detected at home.It is recommended to wear medical gloves before taking the sample.
If there is an assumption about the development of enterobiasis, it is better to use a special test tube with a long rod inside.The end of this stick should be wrapped with cotton wool, and then soaked thoroughly:
- glycerin;
- distilled water;
- salt solution.
The procedure is quite simple and does not require much effort.The container is opened, the rod with cotton is taken, the back is spread, and then the rod is passed into the anus.
The rod with the obtained biological material is placed back into the container, trying not to touch its walls, and the container is closed.
The results of the study can be trusted if the sample of biological material is sent to the laboratory as soon as possible.
You can determine the presence of parasites in you in other ways, for example, using glass slides with special adhesive tape.
The doctor insists that the analytical technology must be done accurately.So, first you need to remove the sticker from the glass slide, apply it to the skin around the anus for a few seconds, widening the back before doing this.After that:
- the tape is again attached to the glass slide;
- the material is taken to a medical institution where research will be conducted.
There is another equally important rule: when collecting biological material, it is forbidden to touch the tape and glass with foreign objects.Also, you can not store the analysis in the refrigerator, as this will greatly affect the results and reliability of the study.
Nowadays, it is possible to test for the presence of parasitic infections by providing a saliva sample.This test is simple and does not require any prior preparation from the patient.They take disposable containers and special reagents that allow you to identify the 11 most common types of helminths.
This method has clear advantages and disadvantages, for example, the test is supported by the ability to detect the presence of worms in all body tissues, and the negative side of the procedure is the relatively high cost of the study.